Title:
【考案の名称】ピツト
Document Type and Number:
Japanese Patent JPS607440
Kind Code:
Y2
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Inventors:
Motomi Sawada
Application Number:
JP684476U
Publication Date:
March 12, 1985
Filing Date:
January 24, 1976
Export Citation:
Assignee:
SAMSUNG ELECTRONICS CO.,LTD.
International Classes:
E21B10/52; E21B10/56; (IPC1-7): E21B10/56
Attorney, Agent or Firm:
Masatake Shiga
Next Patent: JPS607441